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# File activerecord/lib/active_record/base.rb, line 1606def find_one(id,options)conditions=" AND (#{sanitize_sql(options[:conditions])})"ifoptions[:conditions]options.update:conditions=>"#{quoted_table_name}.#{connection.quote_column_name(primary_key)} = #{quote_value(id,columns_hash[primary_key])}#{conditions}"# Use find_every(options).first since the primary key condition# already ensures we have a single record. Using find_initial adds# a superfluous :limit => 1.ifresult=find_every(options).firstresultelseraiseRecordNotFound,"Couldn't find #{name} with ID=#{id}#{conditions}"endend